As far as the T/C muzzle loaders not being accurate with heavier loads I would like to share a bit of information. I shoot a T/C Omega, 110gr of 777 fffg, 300gr Harvester Scorpion PT Gold bullet/sabot, sparked with a CCI 209 primer. I get groups of less than an inch at one hundred yards. With many holes touching each other. I liked my Omega so much I bought another one and my daughter bought one also. The problem of accuracy that you may be reading about might not be the muzzle loader. I would like to suggest that you go and touch, feel and shoulder the different muzzle loaders that are available to you. Choose the one that both you and your son like. And remember "you get what you pay for". Don't expect a $150.00 muzzle loader to be too accurate. Same goes for a scope. If you are going to add a scope, I would suggest one with a ballistic drop reticle. Good Luck, have fun, and welcome to the wonderful world of muzzle loading.